Thermal molecular motion of polyethylene thin films

Hirohiko Yakabe, Keiji Tanaka, Toshihiko Nagamura, Tisato Kajiyama

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Melting and relaxation behaviors in thin films of high-density and linear low-density polyethylene (HDPE and LLDPE) were examined by microthermal analysis and dynamic viscoelastic measurements, respectively. Melting point (T m) in HDPE and LLDPE films, respectively, increased and decreased with decreasing thickness. In the case of the HDPE films, the amorphous content decreased with decreasing thickness. This leads to that molecular motion of chains involved in the crystalline region is depressed with decreasing thickness. In contrast, although the amorphous content also decreased with decreasing thickness for the LLDPE films, it is not so small. Invoking that molecular motion in the amorphous region becomes active and dominates with decreasing film thickness, it can be understood that T m decreased with thickness for the LLDPE films.

本文言語英語
ホスト出版物のタイトル54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan
ページ926
ページ数1
54
1
出版ステータス出版済み - 2005
イベント54th SPSJ Annual Meeting 2005 - Yokohama, 日本
継続期間: 5 25 20055 27 2005

その他

その他54th SPSJ Annual Meeting 2005
Country日本
CityYokohama
Period5/25/055/27/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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